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fixed floor(fixed x)
Rounds x down and returns the result as a fixed-point number.
See the article on Rounding for all rounding modes.
floor(2.3) -> 2.0 floor(3.8) -> 3.0 floor(5.5) -> 5.0 floor(-2.3) -> -3.0 floor(-3.8) -> -4.0 floor(-5.5) -> -6.0